CartItem.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2014 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.financials.cart;
 
import java.io.Serializable;
import org.turro.financials.db.FinancialsPU;
import org.turro.financials.entity.Product;
import org.turro.math.Round;
import org.turro.util.CompareUtil;
 
public class CartItem implements Serializable, Comparable<CartItem> {
 
  private int order;
  private long productId;
  private double quantity, tax, price;
  private boolean needsDelivery, deliveryItem, needsConcept;
  private String concept;
 
  public int getOrder() {
    return order;
  }
 
  public void setOrder(int order) {
    this.order = order;
  }
 
  public long getProductId() {
    return productId;
  }
 
  public void setProductId(long productId) {
    this.productId = productId;
  }
 
  public double getQuantity() {
    return quantity;
  }
 
  public void setQuantity(double quantity) {
    this.quantity = Math.round(quantity);
  }
 
  public double getTax() {
    return tax;
  }
 
  public void setTax(double tax) {
    this.tax = tax;
  }
 
  public double getPrice() {
    return price;
  }
 
  public void setPrice(double price) {
    this.price = price;
  }
 
  public String getConcept() {
    return concept;
  }
 
  public void setConcept(String concept) {
    this.concept = concept;
  }
 
  public boolean isNeedsDelivery() {
    return needsDelivery;
  }
 
  public boolean isDeliveryItem() {
    return deliveryItem;
  }
 
  public void setDeliveryItem(boolean deliveryItem) {
    this.deliveryItem = deliveryItem;
  }
 
  public boolean isNeedsConcept() {
    return needsConcept;
  }
  
  /* Helpers */
  
  public Double getTaxable() {
    return new Round(price * quantity).decimals(2).value();
  }
 
  public double getAmount() {
    return new Round((getTaxable() * (1 + tax / 100))).decimals(2).value();
  }
  
  public double getTaxAmount() {
    return getAmount() - getTaxable();
  }
  
  public boolean isValid() {
    return getProduct() != null &&
           quantity != 0.0;
  }
  
  public void makeValid() {
    if(getProduct() != null) {
      if(quantity == 0.0) {
        quantity = 1.0;
      }
      if(tax == 0.0) {
        tax = getProduct().getTax();
      }
      if(price == 0.0) {
        price = getProduct().getPrice();
      }
      needsDelivery = getProduct().isDelivery();
      needsConcept = getProduct().isConcept();
    }
  }
 
  private transient Product product;
 
  public Product getProduct() {
    if(productId != 0) {
      if(product == null || productId != product.getId()) {
        product = new FinancialsPU().find(Product.class, productId);
      }
    } else {
      product = null;
    }
    return product;
  }
 
  /* Interaction */
  
  @Override
  public int compareTo(CartItem o) {
    int result = CompareUtil.compare(getOrder(), o.getOrder());
    if(result == 0) {
      result = CompareUtil.compare(isValid(), o.isValid());
    }
    if(result == 0) {
      result = CompareUtil.compare(getProduct().getId(), o.getProduct().getId());
    }
    return result;
  }
 
}